The influence of birth type and sex on rearing of Polish Heath and Żelaźnieńska lambs

<b>The aim of the study was to determine the effect of birth type and sex on lambs survival parameters of polish heath and żelazneńska sheep. The research included data, which was used to determine the prolificacy index, the percentage of live-born lambs and the lambs rearing index up to 100 d...

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Autores principales:	Aurelia Radzik-Rant, Witold Rant, Adrianna Bryjak, Roman Niżnikowski
Formato:	article
Lenguaje:	EN PL
Publicado:	Polish Society of Animal Production 2020
Materias:	sheep breed lamb rearing type of birth Zoology QL1-991
Acceso en línea:	https://doaj.org/article/667773a87e994551820c4018285833ac
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spelling	oai:doaj.org-article:667773a87e994551820c4018285833ac2021-11-10T16:43:57ZThe influence of birth type and sex on rearing of Polish Heath and Żelaźnieńska lambs1733-73052719-393410.5604/01.3001.0014.5648https://doaj.org/article/667773a87e994551820c4018285833ac2020-12-01T00:00:00Zhttp://zootechnical.com/gicid/01.3001.0014.5648http://zootechnical.com/gicid/pdf/01.3001.0014.5648https://doaj.org/toc/1733-7305https://doaj.org/toc/2719-3934<b>The aim of the study was to determine the effect of birth type and sex on lambs survival parameters of polish heath and żelazneńska sheep. The research included data, which was used to determine the prolificacy index, the percentage of live-born lambs and the lambs rearing index up to 100 days of age. A higher prolificacy index (P≤0.01) and a higher percentage (P≤0.01) of reared lambs were determined in the polish heath compared to the żelazneńska sheep. In the herd of the first breed, a greater proportion of twin and more numerous litters than singleton births were noted. Single and twin litters were dominant in the żelazneńskie sheep. The rearing rate of lambs from single litters was at a similar level in both observed breeds. However, in the herd of polish heath sheep, lambs from multiple litters shoved also high rearing rate. Single ram lambs were characterized by higher (P≤0.01) body weight at birth and at 56 days of age compared to twin born and ewe lambs, both in polish heath sheep and żelazneńska sheep. Statistical differences (P≤0.01) in body weight at birth and on 56th day of age were also recorded between twins and triplets in polish heath sheep. The analysis of the distribution of lambs' mortality during the rearing period has shown that the most critical is the first week of life of the born offsprings.</b> Aurelia Radzik-RantWitold RantAdrianna BryjakRoman NiżnikowskiPolish Society of Animal Productionarticlesheepbreedlamb rearingtype of birthZoologyQL1-991ENPLRoczniki Naukowe Polskiego Towarzystwa Zootechnicznego, Vol 16, Iss 4, Pp 9-20 (2020)
institution	DOAJ
collection	DOAJ
language	EN PL
topic	sheep breed lamb rearing type of birth Zoology QL1-991
spellingShingle	sheep breed lamb rearing type of birth Zoology QL1-991 Aurelia Radzik-Rant Witold Rant Adrianna Bryjak Roman Niżnikowski The influence of birth type and sex on rearing of Polish Heath and Żelaźnieńska lambs
description	<b>The aim of the study was to determine the effect of birth type and sex on lambs survival parameters of polish heath and żelazneńska sheep. The research included data, which was used to determine the prolificacy index, the percentage of live-born lambs and the lambs rearing index up to 100 days of age. A higher prolificacy index (P≤0.01) and a higher percentage (P≤0.01) of reared lambs were determined in the polish heath compared to the żelazneńska sheep. In the herd of the first breed, a greater proportion of twin and more numerous litters than singleton births were noted. Single and twin litters were dominant in the żelazneńskie sheep. The rearing rate of lambs from single litters was at a similar level in both observed breeds. However, in the herd of polish heath sheep, lambs from multiple litters shoved also high rearing rate. Single ram lambs were characterized by higher (P≤0.01) body weight at birth and at 56 days of age compared to twin born and ewe lambs, both in polish heath sheep and żelazneńska sheep. Statistical differences (P≤0.01) in body weight at birth and on 56th day of age were also recorded between twins and triplets in polish heath sheep. The analysis of the distribution of lambs' mortality during the rearing period has shown that the most critical is the first week of life of the born offsprings.</b>
format	article
author	Aurelia Radzik-Rant Witold Rant Adrianna Bryjak Roman Niżnikowski
author_facet	Aurelia Radzik-Rant Witold Rant Adrianna Bryjak Roman Niżnikowski
author_sort	Aurelia Radzik-Rant
title	The influence of birth type and sex on rearing of Polish Heath and Żelaźnieńska lambs
title_short	The influence of birth type and sex on rearing of Polish Heath and Żelaźnieńska lambs
title_full	The influence of birth type and sex on rearing of Polish Heath and Żelaźnieńska lambs
title_fullStr	The influence of birth type and sex on rearing of Polish Heath and Żelaźnieńska lambs
title_full_unstemmed	The influence of birth type and sex on rearing of Polish Heath and Żelaźnieńska lambs
title_sort	influence of birth type and sex on rearing of polish heath and żelaźnieńska lambs
publisher	Polish Society of Animal Production
publishDate	2020
url	https://doaj.org/article/667773a87e994551820c4018285833ac
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The influence of birth type and sex on rearing of Polish Heath and Żelaźnieńska lambs

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