Forage intake by beef heifers receiving rice bran with and without
                  ionophore

Eloy, Lidiane Raquel; Rocha, Marta Gomes da; Pötter, Luciana; Fonseca Neto, Álvaro Moraes da; Biscaíno, Ludmila Leonardi; Alves, Marcos Bernardino; Graminho, Larissa Arnhold; Stivanin, Sheila Cristina Bosco

doi:10.1590/0103-8478cr20131135

home Sumário navigate_before Anterior Atual Seguinte navigate_next

home Sumário

Produção Animal • Cienc. Rural 44 (7) • July 2014 • https://doi.org/10.1590/0103-8478cr20131135 linkcopy

Forage intake by beef heifers receiving rice bran with and without ionophore

Authorship SCIMAGO INSTITUTIONS RANKINGS

The forage intake was evaluated in beef heifers exclusively in Italian ryegrass (Lolium multiflorum Lam.) pasture or receiving rice bran with or without addition of ionophore. Chromic oxide was used as a fecal production indicator. The experimental design was completely randomized with repeated measures on time, three treatments and three area replicates. The animals were considered experimental units for intake evaluations. The pasture intake by heifers was similar at different feeding systems causing similar stocking rate. The supply of rice bran with or without monensin increased the total dry matter intake. The individual heifers performance was increased with ionophore addition to rice bran. Ionophore is recommended when there is a goal to reduce the age of beef heifers at their first mating.

Angus; Lolium multiflorum Lam; monensin; chromic oxide

Variáveis	-------------- Períodos de Avaliação -------------	P*	P**	CV
Variáveis	03/08-30/08	31/08-27/09	28/09-25/10
Altura do dossel¹	9,01b	9,46b	11,97a	CV			0,0003	0,2180	5,65
Oferta de forragem²	11,68a	10,84a	6,64b	0,0019	0,2761	6,99
Oferta de lâminas foliares³	7,11a	4,50b	1,36c	0,0004	0,9135	13,48
Fibra em detergente neutro³	42,80c	49,33b	60,03a	<,0001	0,2719	1,20
Nutrientes digestíveis totais³	82,31a	82,13a	73,95b	<,0001	0,6056	0,78
Digestibilidade in situ da matéria seca³	85,30a	81,66a	70,90b	<,0001	0,4091	1,87

Sistemas alimentares	---------------- Períodos de Avaliação ------------	Média	P*	P**	CV
Sistemas alimentares	03/08-30/08	31/08-27/09	28/09-25/10
	-------------------------------------------------------- Consumo de pasto --------------------------------------------------------
Azevém	3,07	31/08-27/09	28/09-25/10					2,90	2,49	2,82
Farelo	2,42	2,42	2,54	2,46	0,3836	0,3403	6,76
Ionóforo	2,86	2,83	2,18	2,62
Média	2,78a	2,72a	2,40b		0,0991
	--------------------------------------------- Consumo total (pasto + suplemento) ----------------------------------------------
Azevém	3,07	2,72a	2,40b		0,0991			2,90	2,49	2,82b
Farelo	3,22	3,22	3,34	3,26ab	0,0764	0,3403	5,62
Ionóforo	3,66	3,63	2,98	3,42a
Média	3,32a	3,25a	2,94b		0,0991
	------------------------------------------------------ Consumo de FDN ----------------------------------------------------------
Azevém	1,32a	3,25a	2,94b		0,0991			1,44a	1,11b	1,29
Farelo	1,27a	1,40a	1,78a	1,48	0,2232	0,0284	7,22
Ionóforo	1,39a	1,61a	1,63a	1,54
Média	1,33	1,48	1,51		0,1528
	--------------------------------------------------------- Consumo de PB ----------------------------------------------------------
Azevém	0,77a	1,48	1,51		0,1528			0,53a	0,37b	0,56
Farelo	0,71a	0,52a	0,64a	0,62	0,2251	0,0227	7,04
Ionóforo	0,67a	0,73a	0,60a	0,67
Média	0,71	0,59	0,54		0,0091
	-------------------------------------------------------- Consumo de EM ----------------------------------------------------------
Azevém	16,18a	0,59	0,54		0,0091			15,61b	11,57b	14,45
Farelo	16,94a	16,93a	22,11a	18,66	0,0058	0,0163	6,88
Ionóforo	18,35a	23,23a	21,89a	21,16
Média	17,16	18,59	18,52		0,4945
	------------------------------------------------------- Ganho médio diário -------------------------------------------------------
Azevém	1,07	18,59	18,52		0,4945			1,11	1,05	1,08b
Farelo	1,02	1,19	1,13	1,12b	0,0343	0,8060	6,20
Ionóforo	1,31	1,43	1,33	1,35a
Média	1,13b	1,24a	1,17ab		0,0910

vertical_align_top show_chart

more_horiz close
- image
- translate
- link
- article
- vertical_align_top
- file_download
- show_chart
- image
- translate
- link
- article

location_on

Universidade Federal de Santa Maria Universidade Federal de Santa Maria, Centro de Ciências Rurais , 97105-900 Santa Maria RS Brazil , Tel.: +55 55 3220-8698 , Fax: +55 55 3220-8695 - Santa Maria - RS - Brazil
E-mail: cienciarural@mail.ufsm.br

rss_feed Acompanhe os números deste periódico no seu leitor de RSS

[t01TFN01] *Probabilidade entre períodos de avaliação do azevém; **Probabilidade da interação sistemas alimentares e períodos de avaliação (P<0,10); CV=coeficiente de variação; ¹-cm; ²-% do peso corporal; ³-%. Valores seguidos de letras distintas na linha indicam diferença pelo Ismeans a 10% de probabilidade