Mineral requirements for growth of wool and hair lambs

Autor: Carla Joice Härter, Kleber Tomás de Resende, Américo Garcia da Silva Sobrinho, Aderbal Marcos de Azevedo Silva, Izabelle Auxiliadora Molina de Almeida Teixeira, Ana Paula de Oliveira Sader
Přispěvatelé: Universidade Estadual Paulista (Unesp), Universidade Federal de Campina Grande (UFCG)
Rok vydání: 2013
Předmět:
Zdroj: Revista Brasileira de Zootecnia, Vol 42, Iss 5, Pp 347-353 (2013)
SciELO
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Revista Brasileira de Zootecnia v.42 n.5 2013
Revista Brasileira de Zootecnia
Sociedade Brasileira de Zootecnia (SBZ)
instacron:SBZ
Revista Brasileira de Zootecnia, Volume: 42, Issue: 5, Pages: 347-353, Published: MAY 2013
ISSN: 1516-3598
DOI: 10.1590/s1516-35982013000500007
Popis: Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T19:08:01Z No. of bitstreams: 1 S1516-35982013000500007.pdf: 277270 bytes, checksum: 1d12ad9fb8bb1d9cfa5be7e87002b7c1 (MD5) Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T19:08:01Z No. of bitstreams: 1 S1516-35982013000500007.pdf: 277270 bytes, checksum: 1d12ad9fb8bb1d9cfa5be7e87002b7c1 (MD5) Made available in DSpace on 2013-08-22T19:08:01Z (GMT). No. of bitstreams: 1 S1516-35982013000500007.pdf: 277270 bytes, checksum: 1d12ad9fb8bb1d9cfa5be7e87002b7c1 (MD5) Previous issue date: 2013-05-01 Made available in DSpace on 2013-08-22T19:08:01Z (GMT). No. of bitstreams: 1 S1516-35982013000500007.pdf: 277270 bytes, checksum: 1d12ad9fb8bb1d9cfa5be7e87002b7c1 (MD5) Previous issue date: 2013-05-01 Made available in DSpace on 2013-09-30T20:12:52Z (GMT). No. of bitstreams: 2 S1516-35982013000500007.pdf: 277270 bytes, checksum: 1d12ad9fb8bb1d9cfa5be7e87002b7c1 (MD5) S1516-35982013000500007.pdf.txt: 31280 bytes, checksum: 09010a66770e96018af702aae330e498 (MD5) Previous issue date: 2013-05-01 Made available in DSpace on 2013-09-30T20:12:52Z (GMT). No. of bitstreams: 2 S1516-35982013000500007.pdf: 277270 bytes, checksum: 1d12ad9fb8bb1d9cfa5be7e87002b7c1 (MD5) S1516-35982013000500007.pdf.txt: 31280 bytes, checksum: 09010a66770e96018af702aae330e498 (MD5) Previous issue date: 2013-05-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T15:18:25Z No. of bitstreams: 2 S1516-35982013000500007.pdf: 277270 bytes, checksum: 1d12ad9fb8bb1d9cfa5be7e87002b7c1 (MD5) S1516-35982013000500007.pdf.txt: 31280 bytes, checksum: 09010a66770e96018af702aae330e498 (MD5) Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T15:18:25Z No. of bitstreams: 2 S1516-35982013000500007.pdf: 277270 bytes, checksum: 1d12ad9fb8bb1d9cfa5be7e87002b7c1 (MD5) S1516-35982013000500007.pdf.txt: 31280 bytes, checksum: 09010a66770e96018af702aae330e498 (MD5) Made available in DSpace on 2014-05-20T15:18:25Z (GMT). No. of bitstreams: 2 S1516-35982013000500007.pdf: 277270 bytes, checksum: 1d12ad9fb8bb1d9cfa5be7e87002b7c1 (MD5) S1516-35982013000500007.pdf.txt: 31280 bytes, checksum: 09010a66770e96018af702aae330e498 (MD5) Previous issue date: 2013-05-01 Made available in DSpace on 2014-05-20T15:18:25Z (GMT). No. of bitstreams: 2 S1516-35982013000500007.pdf: 277270 bytes, checksum: 1d12ad9fb8bb1d9cfa5be7e87002b7c1 (MD5) S1516-35982013000500007.pdf.txt: 31280 bytes, checksum: 09010a66770e96018af702aae330e498 (MD5) Previous issue date: 2013-05-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The present study was conducted to determine the body composition and the mineral requirements for growth of wool and hair lambs. A total of 34 castrated lambs with an initial body weight (BW) of 19.9±0.8 kg were used; 17 of these lambs were of the genotype Ideal × Ile de France and 17 were Santa Inês. Ten lambs (5 of each genotype) were slaughtered at the beginning of the experiment to establish their initial body composition. The remaining lambs were assigned to one of three diets (40% roughage and 60% concentrate, 60% roughage and 40% concentrate, or 80% roughage and 20% concentrate) in a 2 × 3 factorial arrangement of treatments. All of the diets were provided ad libitum. When the group under 40% roughage and 60% concentrate reached 35 kg BW, all of the animals were slaughtered. Linear regressions were used to determine the relationship between the shrunk BW and the empty body weight (EBW) for each genotype. These equations were compared and revealed differences between the genotypes. The allometric equations were calculated using the relationship between the amount of minerals and the EBW. The equations of a given mineral for each genotype were compared to verify if they were statistically different. The equations for calcium, phosphorus, magnesium and sodium differed between genotypes. The same equations were used to estimate the major body mineral composition per kilogram of EBW. The net requirement for gain of the fleece-free Ideal × Ile de France lambs ranged from 7.77 to 6.80 g Ca, 4.54 to 4.14 g P, 0.30 to 0.27 g Mg, 1.18 to 1.07 g K and 0.84 to 0.76 g Na per kg BW gain, and the requirements of the Santa Inês animals ranged from 9.57 to 8.37 g Ca, 5.39 to 4.91 g P, 0.36 to 0.33 g Mg, 1.18 to 1.07 g K and 0.90 to 0.81 g Na per kg BW gain for the lambs weighting 20 to 35 kg. Santa Inês lambs showed higher requirements for Ca, P, Mg and Na. Universidade Estadual Paulista Department of Animal Sciences Universidade Federal de Campina Grande (UFCG) CSTR Universidade Estadual Paulista Department of Animal Sciences FAPESP: 98/06746-2
Databáze: OpenAIRE
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