Replacement of corn silage with spineless cactus in sheep diet: carcass and meat sensory characteristics

Ribeiro, Julimar do Sacramento; Moreno, Greicy Mitzi Bezerra; Vieira, Marianna Suellen Bispo; Silva, Maria Josilaine Matos dos Santos; Lima, Carolyny Batista; Mariz, Tobyas Maia de Albuquerque; Santos, Luana Lira; Lima Júnior, Dorgival Morais de

doi:10.4025/actascianimsci.v42i1.48832

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ANIMAL PRODUCTION • Acta Sci., Anim. Sci. 42 • 2020 • https://doi.org/10.4025/actascianimsci.v42i1.48832 copy

Replacement of corn silage with spineless cactus in sheep diet: carcass and meat sensory characteristics

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT.

This study evaluated the effect of replacing corn silage with spineless cactus, in combination with Tifton 85 hay or sugarcane bagasse, on the carcass measurements and sensory properties of the meat of lambs finished in feedlot. Twenty-one, intact, Santa Inês males, with an initial body weight of 22.86 ± 2.87 kg and an average age of 150 days, were individually confined for 74 days and fed at will three treatments diets: Corn silage (CS); Spineless cactus + Tifton 85 hay (CT) and Spineless cactus + sugarcane bagasse (CB). Lambs fed CT had a wider croup (p < 0.05) compared to animals fed CS. The replacement of corn silage with CT or CB did not influence (p > 0.05) the body length, withers height or chest circumference of the lambs. Values of carcass length and compactness index were similar (p > 0.05) between treatments. There was a high and positive correlation (p < 0.05) between chest width (0.82) and chest circumference (0.81) of animals with cold carcass weight. The odor and taste of sheep meat fed CT or CB was more accepted when compared to the meat of animals fed corn silage. The replacement of corn silage with spineless cactus in combination with Tifton 85 hay or sugarcane bagasse improves the sensory quality of sheep meat, but does not interfere with carcass measurements.

Keywords:
biometrics; sugarcane bagasse; Tifton 85 hay; Nopalea cochenillifera; acceptance test

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[1] * Author for correspondence. E-mail: juniorzootec@yahoo.com.br

Variables	Corn silage	Spineless cactus +hay	Spineless cactus +bagasse
Percent composition (%)
Corn Silage	65.00	0	0
Tifton 85 hay	0	30.00	0
Sugarcane bagasse	0	0	30.00
Spineless cactus	0	35.00	35.00
Corn grain	13.00	13.00	8.00
Soybean meal	19.00	19.00	24.00
Mineral mix	3.00	3.00	3.00
Chemical composition (%)
Dry matter	28.68	43.35	50.26
Organic matter	90.97	90.09	90.94
Crude protein	14.98	14.79	14.77
Ether extract	2.34	2.08	1.66
NDF^a	57.42	42.84	43.65
Hemicellulose	28.13	18.72	13.46
ADF^b	29.99	24.12	30.19
NFC ^c	16.23	30.38	30.86

	Corn silage	Spineless cactus +hay	Spineless cactus +bagasse	CV (%)	P-value
Body weight at slaughter (kg)	29.73	35.07	31.78	14.25	0.12
Body length (cm)	63.14	64.86	63.86	5.78	0.69
Withers height (cm)	66.00	66.71	65.71	3.04	0.63
Chest width (cm)	20.14b	21.71a	20.43ab	5.32	0.03
Croup height (cm)	68.71	68.14	67.57	3.01	0.59
Croup width (cm)	18.00	18.43	18.71	8.22	0.67
Chest depth (cm)	30.86	32.29	31.29	5.38	0.29
Chest circumference (cm)	74.14	78.57	77.29	5.6	0.16
Thigh circumference (cm)	34.43	39.00	37.00	9.57	0.07
Conformation (cm)	3.14	3.64	3.07	13.28	0.05

	Corn silage	Spineless cactus + hay	Spineless cactus + bagasse	CV (%)	P-value
Cold carcass weight (kg)	13.66b	17.41a	15.41ab	16.67	0.04
External carcass length (cm)	56.28	58.00	56.00	5.83	1.13
Internal carcass length (cm)	62.71	65.71	63.14	4.49	0.13
Leg length (cm)	38.00	39.71	40.28	8.62	0.89
Croup width (cm)	23.86	25.36	24.86	9.69	0.87
Chest width (cm)	16.86	18.14	17.43	7.06	0.18
Chest depth (cm)	28.00	29.14	28.57	5.75	0.90
Croup perimeter (cm)	58.43	61.00	59.86	5.39	0.35
Leg circumference (cm)	34.00	35.71	34.28	9.29	1.20
Chest circumference (cm)	68.00	72.64	71.43	5.40	0.08
Conformation	1.71b	2.71ª	2.71a	24.82	0.03
Carcass compactness index (kg cm^-1)	0.22	0.26	0.24	14.30	0.06

	BWS	CHW	CRW	CD	CC	TC	IVC	CCW	ECL	ICL
Body measurements
BWS	1.00
CHW	0.68^***	1.00
CRW	0.68^***	0.32^NS	1.00
CD	0.76^***	0.47^*	0.50^**	1.00
CC	0.77^***	0.66^***	0.36^*	0.81^***	1.00
TC	0.57^***	0.49^**	0.26^NS	0.44^*	-	1.00
IVC	0.66^***	0.72^***	0.12^NS	0.57^***	0.73^***	0.69^***	1.00
Carcass measurements
CCW	0.85^***	0.82^***	0.41^*	0.60^***	0.81^***	0.73^***	0.79^***	1.00
ECL	0.58^***	0.64^***	0.24^NS	0.25^NS	0.33^NS	0.45^*	0.45^*	0.58^***	1.00
ICL	0.81^***	0.68^***	0.44^*	0.66^***	0.62^***	0.39^*	0.63^***	0.73^***	0.66^***	1.00
CRWC	0.46^*	0.34^NS	0.43^*	0.13^NS	0.20	0.24^NS	0.09^NS	0.36^NS	0.51^**	0.55^*
CHWC	0.66^***	0.53^**	0.38^*	0.37^*	0.57^***	0.65^***	0.76^NS	0.73^***	0.46^*	0.67^***
CDC	0.61^***	0.39^*	0.11^NS	0.72^***	0.75^***	0.58^***	0.69^NS	0.66^***	0.36^NS	0.59^***
CPC	0.83^***	0.65^***	0.55^**	0.55^***	0.73^***	0.62^***	0.61^NS	0.83^***	0.53^*	0.75^***
LC	0.58^***	0.39^*	0.35^NS	0.31^NS	0.44^*	0.23^NS	0.32^NS	0.47^*	0.39^*	0.52^**
CCC	0.83^***	0.66^***	0.38^*	0.73^***	0.90^***	0.71^***	0.76^NS	0.92^***	0.40^*	0.70^***
CC	0.49^***	0.64^***	0.23^NS	0.48^*	0.69^***	0.48^**	0.44^NS	0.69^***	0.33^NS	0.49^**

	Corn silage	Spineless cactus + hay	Spineless cactus + bagasse	CV (%)	P-value
Appearance	7.37	7.14	7.39	17.40	0.53
Odor	6.53b	7.25a	7.71a	24.26	0.00
Juiciness	7.04	7.00	6.86	24.41	0.86
Flavor	6.53b	7.43a	7.22a	22.18	0.00
Tenderness	7.57	7.86	7.37	19.99	0.21