Effect of anthelmintics on reproductive performance and first-lactation culling rate in Holstein heifers
Female Holstein calves were treated with ivermectin from birth to first oestrus to study the effect of parasitic burden and anthelmintic treatment on reproductive and productive performance. First oestrus, age at first service and age at calving were advanced by 30, 70 and 110 days, respectively (P&...
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2009
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00424900_v165_n25_p743_Mejia http://hdl.handle.net/20.500.12110/paper_00424900_v165_n25_p743_Mejia |
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paper:paper_00424900_v165_n25_p743_Mejia2023-06-08T15:04:50Z Effect of anthelmintics on reproductive performance and first-lactation culling rate in Holstein heifers anthelmintic agent ivermectin age animal animal parasitosis article breeding cattle cattle disease chemistry drug effect estrus female lactation milk physiology randomization reproduction secretion Age Factors Animals Anthelmintics Breeding Cattle Cattle Diseases Estrus Female Helminthiasis, Animal Ivermectin Lactation Milk Random Allocation Reproduction Animalia Female Holstein calves were treated with ivermectin from birth to first oestrus to study the effect of parasitic burden and anthelmintic treatment on reproductive and productive performance. First oestrus, age at first service and age at calving were advanced by 30, 70 and 110 days, respectively (P<0.05), in ivermectin-treated animals compared with controls. No significant differences were observed in the conception rate, the number of services and the characteristics of the newborn calves and any problems at calving between the two groups. Daily milk yield, fat content in milk during first lactation and the concentrations of growth hormone, insulin-like growth factor type I, insulin and prolactin in serum were similar in both groups of cows. Culling during the first lactation was more common in untreated (47 per cent) than in treated (11 per cent) cows (P<0.05). 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00424900_v165_n25_p743_Mejia http://hdl.handle.net/20.500.12110/paper_00424900_v165_n25_p743_Mejia |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
topic |
anthelmintic agent ivermectin age animal animal parasitosis article breeding cattle cattle disease chemistry drug effect estrus female lactation milk physiology randomization reproduction secretion Age Factors Animals Anthelmintics Breeding Cattle Cattle Diseases Estrus Female Helminthiasis, Animal Ivermectin Lactation Milk Random Allocation Reproduction Animalia |
spellingShingle |
anthelmintic agent ivermectin age animal animal parasitosis article breeding cattle cattle disease chemistry drug effect estrus female lactation milk physiology randomization reproduction secretion Age Factors Animals Anthelmintics Breeding Cattle Cattle Diseases Estrus Female Helminthiasis, Animal Ivermectin Lactation Milk Random Allocation Reproduction Animalia Effect of anthelmintics on reproductive performance and first-lactation culling rate in Holstein heifers |
topic_facet |
anthelmintic agent ivermectin age animal animal parasitosis article breeding cattle cattle disease chemistry drug effect estrus female lactation milk physiology randomization reproduction secretion Age Factors Animals Anthelmintics Breeding Cattle Cattle Diseases Estrus Female Helminthiasis, Animal Ivermectin Lactation Milk Random Allocation Reproduction Animalia |
description |
Female Holstein calves were treated with ivermectin from birth to first oestrus to study the effect of parasitic burden and anthelmintic treatment on reproductive and productive performance. First oestrus, age at first service and age at calving were advanced by 30, 70 and 110 days, respectively (P<0.05), in ivermectin-treated animals compared with controls. No significant differences were observed in the conception rate, the number of services and the characteristics of the newborn calves and any problems at calving between the two groups. Daily milk yield, fat content in milk during first lactation and the concentrations of growth hormone, insulin-like growth factor type I, insulin and prolactin in serum were similar in both groups of cows. Culling during the first lactation was more common in untreated (47 per cent) than in treated (11 per cent) cows (P<0.05). |
title |
Effect of anthelmintics on reproductive performance and first-lactation culling rate in Holstein heifers |
title_short |
Effect of anthelmintics on reproductive performance and first-lactation culling rate in Holstein heifers |
title_full |
Effect of anthelmintics on reproductive performance and first-lactation culling rate in Holstein heifers |
title_fullStr |
Effect of anthelmintics on reproductive performance and first-lactation culling rate in Holstein heifers |
title_full_unstemmed |
Effect of anthelmintics on reproductive performance and first-lactation culling rate in Holstein heifers |
title_sort |
effect of anthelmintics on reproductive performance and first-lactation culling rate in holstein heifers |
publishDate |
2009 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00424900_v165_n25_p743_Mejia http://hdl.handle.net/20.500.12110/paper_00424900_v165_n25_p743_Mejia |
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1768546620787392512 |