Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 8 de 8
Filtrar
Mais filtros

País de afiliação
Intervalo de ano de publicação
1.
Arch Anim Breed ; 64(1): 69-82, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34084905

Resumo

The objective was to find whether cow growth, milk performance, and behaviour are affected by (1) rearing conditions until weaning after a milk-fed period of 84 d and (2) the sire lineage. Thirty-five Holstein heifers were assigned to one of three treatments: SM, n = 13 , pen with mother to 21st day, then group pen (they received a maximum of 6 kg of milk daily); SN, n = 9 , after 3 d with own mother in pen with nursing cow (they received a maximum of 6 kg of milk daily); H, n = 13 , in hutch from the 2nd to 56th day (6 kg of milk replacer daily), then loose housing pen to weaning (6 kg of milk replacer daily). After weaning at the 84th day, all heifers were kept in pens with the same ration as during calving. During lactation, live body weight (LBW) was measured each month and milk yield each day. Maze learning was evaluated in the fifth month of lactation. The data were analysed using a general linear model ANOVA. At the 30th day, the LBW tended to be the highest in SN (SM 528.2  ±  11.4 kg, SN 571.7  ±  15.3 kg, H 533.2  ±  12.3 kg). When lactation ended, the highest LBW was in SN and the lowest in H (SM 612.6  ±  12.2 kg, SN 623.1  ±  16.4 kg, H 569.8  ±  13.2 kg; P < 0.05 ). The SN tended to have the highest production of milk (SM 7143.9  ±  241.5 kg, SN 7345.1  ±  319.0 kg, H 7146.7  ±  234 kg), and the H for FCM (SM 6290.3  ±  203.2 kg, SN 6307.6  ±  268.4 kg, H 6399.3  ±  197.1 kg) for 305 d lactation. Group SN crossed the maze fastest (SM 1141.4  ±  120.5 s, SN 810.3  ±  160.5 s, H 1120.8  ±  118.6 s). The vocalization number differed significantly (SM 32.3  ±  5.7, SN 20.8  ±  4.4, H 9.9  ±  2.6; P < 0.01 ). The results indicated that the rearing method up to weaning may have an impact on dairy cows' performance and behaviour.

2.
J. Anim. Behav. Biometeorol ; 10(1): 1-11, jan. 2022. graf, tab
Artigo em Inglês | VETINDEX | ID: biblio-1484117

Resumo

Objective of this study was to test the hypotheses that heifer's behaviour after 12 months (M) are impacted by rearing (feeding/housing) before weaning, seasons of birth, and father lineage. Fifty-one Holstein heifers (born in year seasons SB1, SB2, SB3, and SB4, originating from 4 fathers) were assigned to one of three rearing treatments: restricted suckling (RS), calf in pen with mother to 21st day, suck three times daily, then group pen (6 kg milk) to weaning; unrestricted suckling (US), calf in pen with foster cows (6 kg milk) to weaning; conventional rearing (CR), calf in the hutch to 56th day, then group pen to weaning (milk replacer 6 kg). After weaning at the 84th day, heifers were kept in groups with the same ration. The labyrinth behaviour was tested in the 12th and 19th M of the age. In the evaluation factors rearing and season of birth, groups US and SB3 solved the passage of the labyrinth the fastest (868.0 s, 857.4 s), the slowest were CR and SB1 (1148.2 s, 1257.5 s). The results show that the manner (housing/feeding) used to rear heifers and season of birth may impact their later labyrinth behaviour.


Assuntos
Animais , Bovinos , Características de Residência , Comportamento Animal , Linhagem
3.
J. Anim. Behav. Biometeorol ; 10(1): 2213, jan. 2022. graf, tab
Artigo em Inglês | VETINDEX | ID: biblio-1438132

Resumo

Objective of this study was to test the hypotheses that heifer's behaviour after 12 months (M) are impacted by rearing (feeding/housing) before weaning, seasons of birth, and father lineage. Fifty-one Holstein heifers (born in year seasons SB1, SB2, SB3, and SB4, originating from 4 fathers) were assigned to one of three rearing treatments: restricted suckling (RS), calf in pen with mother to 21st day, suck three times daily, then group pen (6 kg milk) to weaning; unrestricted suckling (US), calf in pen with foster cows (6 kg milk) to weaning; conventional rearing (CR), calf in the hutch to 56th day, then group pen to weaning (milk replacer 6 kg). After weaning at the 84th day, heifers were kept in groups with the same ration. The labyrinth behaviour was tested in the 12th and 19th M of the age. In the evaluation factors rearing and season of birth, groups US and SB3 solved the passage of the labyrinth the fastest (868.0 s, 857.4 s), the slowest were CR and SB1 (1148.2 s, 1257.5 s). The results show that the manner (housing/feeding) used to rear heifers and season of birth may impact their later labyrinth behaviour.(AU)


Assuntos
Animais , Feminino , Comportamento Animal/fisiologia , Bovinos/fisiologia , Ração Animal/análise
4.
Animals (Basel) ; 7(3)2017 Mar 03.
Artigo em Inglês | MEDLINE | ID: mdl-28273810

Resumo

Transfer of cattle to an unknown barn may result in a reduction in its welfare. Housing and management practices can result in signs of stress that include a long-term suppression of milk efficiency. The purpose of this study was to evaluate the influence of moving cows from the stanchion-stall housing to free-stall housing on their behaviour and production. The Holstein cows were moved into the new facility with free-stall housing from the old barn with stanchion-stall housing. Cows lay down up to ten hours (596.3 ± 282.7 min) after removing. The cows in their second lactation and open cows tended to lie sooner after removing than cows in their first lactation and pregnant cows. The times of total lying and rumination were increasing from the first day to the tenth day after removing (23.76 ± 7.20 kg vs. 30.97 ± 7.26 kg, p < 0.001). Cows produced 23.3% less milk at the first day following the transfer than at the last day prior to moving (p < 0.001). Loss of milk was gradually reduced and maximum production was achieved on the 14th day. The difference was found in milk losses due to the shift between cows on the first and second lactation (p < 0.01). The results of this study suggest that removing from the tie-stall barn with a pipeline milking system into the barn with free-stall housing and a milking parlour caused a decline in the cows' milk production. However, when the cows are moved to a better environment, they rapidly adapt to the change.

5.
J. Anim. Behav. Biometeorol ; 9(1): 1-8, Jan. 2021. tab
Artigo em Inglês | VETINDEX | ID: biblio-1484341

Resumo

The objective was to find whether calf behaviour is affected by it rearing to weaning in 84 days, gender, and the sire lineage. 99 Holstein calves were assigned to 1 of 3 treatments: artificially reared in hutches (A), suckling of a foster cow (F), or suckling of the mother (M). After weaning (84 days), all calves were kept separately by sex in age-balanced groups. The speed of traversing the maze was recorded at 6 months of age. The open-field observation was performed at 10 months. The average time of traversing the maze facility was no significantly different among treatment groups. The average time of traversing the maze for 6 tasks was the highest in A and the lowest in the F group (P 0.05). At the open field test, the difference compared to the grid (square) crossings was significant at the 1st minute of the 1st test (P 0.05). The average of the grid crossings in all tests was highest in M (139.5) and the lowest in A (123.1) (P 0.05). There were no significant differences between sex in behaviour in the maze or the open field tests. Sire lineage significant effect was found in vocalisation and defecation behaviour. The results show that the method used to rear calves and sire lineage may have an impact on their later behaviour.


Assuntos
Masculino , Feminino , Animais , Bovinos , Aprendizagem em Labirinto , Bovinos/crescimento & desenvolvimento , Comportamento Animal , Desmame
6.
J. Anim. Behav. Biometeorol ; 9(3): 1-12, July 2021. ilus, tab
Artigo em Inglês | VETINDEX | ID: biblio-1484356

Resumo

The aim of the study was to tested hypotheses that the primiparous cow’s behaviour is impacted by the method of rearing from the second day of life to weaning. 53 Holstein primiparous cows were used. They were reared in different ways during milk nutrition. Calf-heifers were assigned to one of five rearing groups on the second day after having nursed their mothers for 24 hours: H) hutch; HA) hutch, from 7 days pen with an automated drinking machine (ADM); MA) with mother, from 7 days pen with an ADM; MH) with mother, from 7 days hutch; MN) with mother, from 4 days with nursing cows. After weaning (56 days), all heifers were kept in group pens, after calving in free-stall housing. Maze learning ability was tested in the third month of lactation. In the 5th month, cows were observed in the open-field, in the seventh month they were subjected to an aversion test (AT). Group MN was the slowest in solving all tasks and HA the fastest. Differences were recorded among groups in the first-day evaluation (P < 0.01). No differences in open field tests were found. In the AT traversing, the slowest were groups H and HA, the fastest MH and MA (P < 0.01). The time of the first return was different (P < 0.001). On the first day, the most vocalized cows of the MN group (P < 0.05). The results show that the method used to rear heifers may have a significant impact on their maze and aversive behaviour.


Assuntos
Feminino , Animais , Lactente , Bovinos , Bovinos/crescimento & desenvolvimento , Bovinos/fisiologia , Comportamento Animal , Desmame
7.
J. Anim. Behav. Biometeorol. ; 09(03): 1-12, July 2021. ilus, tab
Artigo em Inglês | VETINDEX | ID: vti-33341

Resumo

The aim of the study was to tested hypotheses that the primiparous cows behaviour is impacted by the method of rearing from the second day of life to weaning. 53 Holstein primiparous cows were used. They were reared in different ways during milk nutrition. Calf-heifers were assigned to one of five rearing groups on the second day after having nursed their mothers for 24 hours: H) hutch; HA) hutch, from 7 days pen with an automated drinking machine (ADM); MA) with mother, from 7 days pen with an ADM; MH) with mother, from 7 days hutch; MN) with mother, from 4 days with nursing cows. After weaning (56 days), all heifers were kept in group pens, after calving in free-stall housing. Maze learning ability was tested in the third month of lactation. In the 5th month, cows were observed in the open-field, in the seventh month they were subjected to an aversion test (AT). Group MN was the slowest in solving all tasks and HA the fastest. Differences were recorded among groups in the first-day evaluation (P < 0.01). No differences in open field tests were found. In the AT traversing, the slowest were groups H and HA, the fastest MH and MA (P < 0.01). The time of the first return was different (P < 0.001). On the first day, the most vocalized cows of the MN group (P < 0.05). The results show that the method used to rear heifers may have a significant impact on their maze and aversive behaviour.(AU)


Assuntos
Animais , Feminino , Lactente , Bovinos , Bovinos/crescimento & desenvolvimento , Bovinos/fisiologia , Comportamento Animal , Desmame
8.
J. Anim. Behav. Biometeorol. ; 09(01): 1-8, Jan. 2021. tab
Artigo em Inglês | VETINDEX | ID: vti-765636

Resumo

The objective was to find whether calf behaviour is affected by it rearing to weaning in 84 days, gender, and the sire lineage. 99 Holstein calves were assigned to 1 of 3 treatments: artificially reared in hutches (A), suckling of a foster cow (F), or suckling of the mother (M). After weaning (84 days), all calves were kept separately by sex in age-balanced groups. The speed of traversing the maze was recorded at 6 months of age. The open-field observation was performed at 10 months. The average time of traversing the maze facility was no significantly different among treatment groups. The average time of traversing the maze for 6 tasks was the highest in A and the lowest in the F group (P 0.05). At the open field test, the difference compared to the grid (square) crossings was significant at the 1st minute of the 1st test (P 0.05). The average of the grid crossings in all tests was highest in M (139.5) and the lowest in A (123.1) (P 0.05). There were no significant differences between sex in behaviour in the maze or the open field tests. Sire lineage significant effect was found in vocalisation and defecation behaviour. The results show that the method used to rear calves and sire lineage may have an impact on their later behaviour.(AU)


Assuntos
Animais , Masculino , Feminino , Bovinos , Bovinos/crescimento & desenvolvimento , Comportamento Animal , Aprendizagem em Labirinto , Desmame
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA